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Blockchain-based publishing layer for the Keyless Signing Infrastructure

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Author

Summary, in English

A Keyless Signing Infrastructure (KSI) provides users with a means to timestamp documents on a per-second basis. The KSI consists of a global infrastructure with several server layers and by using Merkle hash trees, the root hash can be used to verify the integrity and timestamp of a document. Regular publication of root hashes, e.g., once per month, allows a document to be verified without support of the servers, but the previously proposed publication channels have several limitations. In this paper we address these limitations and show how a blockchain can be used as an additional publication layer on top of a KSI. Using the scripting capabilities in transactions, new features are introduced to the publication of root hashes. This includes faster publication, proof of origin for the publisher and the possibility for third parties to explicitly verify root hashes before they are published. These improvements will allow the verification of documents to be simpler, more flexible and more secure.

Publishing year

2017

Language

English

Pages

374-381

Publication/Series

The 13th IEEE International Conference on Advanced and Trusted Computing

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Computer Systems

Conference name

13th IEEE International Conference on Advanced and Trusted Computing

Conference date

2016-07-18 - 2016-07-21

Conference place

Toulouse, France

Status

Published

ISBN/ISSN/Other

  • ISBN: 9781509027705